Packing.



M. ROTTER.

PAGKIN G.

APPLICATION FILED 11110.15, 1910.

Patented Dec. 13, 1910.

STEAM EJEETEIFQ SYSTEM CIR HEATING-1- A'T'TCI N EY.

WITNEE; 5 ES 61x41 mow ITED STATES PATENT OFFICE.

MAX,ROTTEB, OF MILWAUKEE, WISCONSIN, A SSIGNOB TO ALLIS'CHALMERS COMPANY,

OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY.

A PACKI G.

Specification of I-ettersPatent. P t t 1910,

Application filed. August 15, 1910. Serial No. 577,148.-

To all whom it mag concern:

Be it known thatI, MAX ROTTER a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented a certain new and useful Improvement 1n Packing, of which struction of packing for rotary shafts such as steam turbine shafts.

The object of the invention is to provide a packing for rotating shafts, which is simple in construction and efiicient in operation.

With this invention the exhaust steam from high pressure engines may be used for driving low pressure engines, in heating systems, or for other purposes where'it is essential to prevent the admission of air to the steam before its admission to the device utili zing the exhaust steam. Heretofore engines using steam throughout above atmospheric pressure have made use of packing from an intermediate point of which an ejector is applied for the purpose of carr ing away the steam that might otherwise let by the packing to the atmosphere. In doing this the ejector has a tendency to draw air from the outside of the packing and discharge it with the leakage steam. The pres ent invention introduces the Well known low-pressure water packed gland between the point of application of the ejector and the atmosphere to prevent the introduction of air into the leakage steam which now becomes applicable to any purpose where the presence of air therein would be objectionable.

A clear conception of one embodiment of the invention can be obtained by referring to the accompanying drawing in which like engine, passes through the engine end frame or casingQ and is mounted in suitable bearings, not shown. The gland runner 11 is formed in one with the gland hub 13, which hub is secured to the shaft 1, being adapted to rotate therewith! The gland runner recess 15 is formed in the gland casin 9, the gland runner 11 extending into and being adjacent the surfaces of the recess 15. v The annular clearance space 16 is formed between the periphery of the runner 11 and the clrcular surface of the recess 15. The gland 9 is fastened to the end casing 2 and casin may Tie formedin one therewith if so de-- sired. A series of annular calking strips 12 are fixed to the casing 9 extending inwardly therefrom to within a short distance from the periphery of the hub 13. The packin recess 10 is annular in shape and is forme in the gland casing 9 between the gland runner recess 15 and the interior of the englne.

The wateninlet passage 8 which connects at one end wlth any suitable source of liquid supply, not shown, leads to the annular space 16 at the to thereof. The water outlet passage 17 lea s from the annular space 16 near the upper part thereof and discharges ast a throttle valve 18 to any suitable disc arge chamber not shown. The ejector assage 3 connects the annular recess 10 with the end of the pipe 6 which leads to the interior of the ejector 4 of any of the usual types. The ejector steam pipe '5 enters the ejector 4 in line with the e ector nozzle, not shown, which nozzle is directed toward. the ejector discharge pipe 7. The discharge pipe 7 is connected with the low ressure turbine, heating system, or other device utilizing the ex haust from the high pressure engine.

During the operation of the engine, the interior of the casin 2 has a ressure above atmospheric establis ed thereln. The rotation of the shaft 1 causes the gland runner to rotate within the recess 15. The packing 'fluid, preferably water, is admitted to the recess 15 through the passage 8 and after becoming heated is eventually discharged through the discharge passage 17. The r0- tation of the runner 11 forces the water within the recess 15 outward, thereby filling the space 16 between the runner 11 and the casing 9 and forming a liquid seal between these members. The annular calkiug strips 12 partially prevent the leakage of high pressure fluid from within the casing 2 to the recess 10, and what leakage does occur is withdrawn by the ejector 4 and is discharged therefrom through the pipe 7 to be shaft, suction means connecting to the space 'between the wall and shaft atan intermef 15 diatefpoint along the bafiling means, and water seal between the wall and shaft atzfl points between said intermediate point of; 1 connection and atmosphere. I

In testimony whereoffl aifix my signature, 20 in the presence of two witnesses.

MAX ROTTER Witnesses:

H. 0.. CASE, G. F. DE WEIN. 

